Amazon.com: Drain Line Adapter (DLA) With 1/4-inch Quick Connect Fitting for a Water Filter and 7/8-inch Fitting for a Dishwasher (ET116-001, D-25QC, DLA-D) : Appliances
ELK Lawn Grate Yard Drain Adapter - Transition From 3" and 4" SCH 40 Pipe to the ELK Lawn Grate - - Amazon.com
Amazon.com : Flex-Drain ADP53102 Downspout Adaptor, Landscaping Drain Pipe Adapter 3 by 4 by 4-Inch 2 Pack : Tools & Home Improvement
4" Schedule 40 x 4" Sewer and Drain Adapter at Menards®
4x3 Inch PVC Sewer & Drain Adapter Coupling | PlumbersStock
Amazon.com : NDS 3P12 3-Inch by 4-Inch PVC Adaptor with Drain Waste Vent to Sewer and Drain Connection, White : Pipe Fittings : Tools & Home Improvement
FDM 4 in. Grate and 4 in. Corrugated Wye with Downspout Adapter - French Drain Systems | Curtain Drains | Macomb, Oakland, Lapeer, St. Clair County
Advanced Drainage Systems 2 In. X 3 In. X 4 In. Polyethylene Corrugated to Downspout Barb X Female Adapter | Hills Flat Lumber
Flexible T / Y, Landscaping Drain Pipe Adapter, 4 Inch, Black ADP53702 | eBay
Amazon.com: Polylok 4" Corrugated Pipe Adapter (4" corrugated to 4" SDR 35 or 4" SCH 40) : Industrial & Scientific
Plumb Pak, White Keeney 46WK 1-1/4-Inch by 1-1/2-Inch Straight Extension Coupling Trap Adapter, 1-1/2-Inch 1-1/2-Inch - Pipe Fittings - Amazon.com
PVC Sewer and Drain Female Cleanout Adapter, 4 in. Hub X FPT in the Sewage Pipe & Fittings department at Lowes.com